Built with green tritium and fiber optics the TRUGLO Brite Site TFO pistol night sights are perfect for all lighting situations, including low light and no light environments. These incredible tough sights are CNC machined from steel and feature a snag resistant design for smooth drawing. The TRUGLO Brite Site TFO pistol night sights will fit standard holsters, so there is no need to purchase a new expensive special holster in order to use the sights. With all these features, it's easy to see why you will soon be putting night sights on all your firearms.